Soci‚lo Zin‚tÚu VÁstnesis, 2019 1 (28), ISSN 1691-1881, eISSN 2592-8562 Derya Deniz, Nida Ates ¸ POSTTRAUMATIC STRESS SYMPTOMS AND WORLD ASSUMPTIONS OF PERSONS WITNESSING A TERRORIST ATTACKS The aim of this study is to compare participantsí level of posttraumatic symptoms and the assumptions of the world according to participantsí trauma witness situation and to examine the relationship among tendency of individualism-collectivism, level of posttraumatic symptoms and the world assumptions. The case that witnessed on this trauma was happened on December 10, 2016 and took place at Vodafone Arena stadium in Istanbul, Turkey. The explosion happened after a soccer match, and terrorists attack carried out against security forces. It was targeted police car with a bomb outside Vodafone Arena and 46 people were killed and 150 people were injured in the blasts attributed by some members of a terrorist organization.The sample of the study was composed of 99 females and 34 males of the students from a university in ›stanbul, 133 participants in total. Demographic form, Post Traumatic Stress Symptom Scale, Individualism-Collectivism Scale, and World Assumptions Scale were used in this study. There was a significant difference between the trauma symptomsí levels according to the presence or absence of trauma events in the past. The results indicated that trauma symptomsí levels of participants, who had traumatic experience, were higher than participants who had no traumatic experience earlier. The ANOVA test results demonstrated that the way of witnessing trauma affects justice assumption scores and it was observed that there was a statistically significant difference in the scores of groups. The scores of justice assumptions of the visually witnessed group in the terrorist attack were higher than the scores of the group who learned the incident from the news sources and social media. Furthermore, the scores of justice assumption of the eye-witnesses group of terrorist attack were higher than the group who ear-witnesses the terrorist attack. The ANOVA test results indicated that the way of witnessing trauma affects control assumption scores and it was found that there was a statistically significant difference in the scores of control assumptions of the groups. The scores of control assumptions of eye-witnesses group in the terrorist attack were higher than the scores of the group whose relatives died or injured in the incident. According to the Pearson correlation analysis results, there was a positive correlation between the tendency of individualism and assumption of randomness. Key words: trauma, world assumptions, individualism, collectivism. Симптомы посттравматического стресса у очевидцев террористических актов и их восприятие мира Целью данного исследования является сравнение уровня посттравматических симп- томов у очевидцев террористических актов и восприятия ими окружающего мира в зависи- мости от способа наблюдения за травматической ситуацией, а также изучение взаимосвязи между позицией на оси индивидуализм-коллективизм, уровнем посттравматических сим- птомов и восприятием мира. Террористический акт, повлёкший за собой изучаемую трав- матическую ситуацию, произошёл 10 декабря 2016 года на стадионе Vodafone Arena в Стамбуле (Турция) после футбольного матча и был совершён по отношению к работни- кам охраны. В частности, была взорвана полицейская машина, стоявшая возле стадиона, в результате чего 46 человек погибли и 150 человек были ранены. Выборка исследования состояла из 99 женщин и 34 мужчин – всего 133 студента Стамбульского Университета. При проведении исследования были использованы следующие инструменты: демогра-